NFSv4: Callers to nfs4_get_renew_cred() need to hold nfs_client->cl_lock

[safe/jmp/linux-2.6] / kernel / posix-timers.c

diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 3eff47b..a140e44 100644 (file)
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -197,6 +197,11 @@ static int common_timer_create(struct k_itimer *new_timer)
        return 0;
 }
 
+static int no_timer_create(struct k_itimer *new_timer)
+{
+       return -EOPNOTSUPP;
+}
+
 /*
  * Return nonzero if we know a priori this clockid_t value is bogus.
  */
@@ -223,6 +228,15 @@ static int posix_ktime_get_ts(clockid_t which_clock, struct timespec *tp)
 }
 
 /*
+ * Get monotonic time for posix timers
+ */
+static int posix_get_monotonic_raw(clockid_t which_clock, struct timespec *tp)
+{
+       getrawmonotonic(tp);
+       return 0;
+}
+
+/*
  * Initialize everything, well, just everything in Posix clocks/timers ;)
  */
 static __init int init_posix_timers(void)
@@ -235,9 +249,16 @@ static __init int init_posix_timers(void)
                .clock_get = posix_ktime_get_ts,
                .clock_set = do_posix_clock_nosettime,
        };
+       struct k_clock clock_monotonic_raw = {
+               .clock_getres = hrtimer_get_res,
+               .clock_get = posix_get_monotonic_raw,
+               .clock_set = do_posix_clock_nosettime,
+               .timer_create = no_timer_create,
+       };
 
        register_posix_clock(CLOCK_REALTIME, &clock_realtime);
        register_posix_clock(CLOCK_MONOTONIC, &clock_monotonic);
+       register_posix_clock(CLOCK_MONOTONIC_RAW, &clock_monotonic_raw);
 
        posix_timers_cache = kmem_cache_create("posix_timers_cache",
                                        sizeof (struct k_itimer), 0, SLAB_PANIC,
@@ -427,7 +448,7 @@ static struct k_itimer * alloc_posix_timer(void)
                return tmr;
        if (unlikely(!(tmr->sigq = sigqueue_alloc()))) {
                kmem_cache_free(posix_timers_cache, tmr);
-               tmr = NULL;
+               return NULL;
        }
        memset(&tmr->sigq->info, 0, sizeof(siginfo_t));
        return tmr;
@@ -474,8 +495,7 @@ sys_timer_create(const clockid_t which_clock,
                goto out;
        }
        spin_lock_irq(&idr_lock);
-       error = idr_get_new(&posix_timers_id, (void *) new_timer,
-                           &new_timer_id);
+       error = idr_get_new(&posix_timers_id, new_timer, &new_timer_id);
        spin_unlock_irq(&idr_lock);
        if (error) {
                if (error == -EAGAIN)
@@ -557,7 +577,7 @@ out:
  * the find to the timer lock.  To avoid a dead lock, the timer id MUST
  * be release with out holding the timer lock.
  */
-static struct k_itimer * lock_timer(timer_t timer_id, unsigned long *flags)
+static struct k_itimer *lock_timer(timer_t timer_id, unsigned long *flags)
 {
        struct k_itimer *timr;
        /*
@@ -565,23 +585,20 @@ static struct k_itimer * lock_timer(timer_t timer_id, unsigned long *flags)
         * flags part over to the timer lock.  Must not let interrupts in
         * while we are moving the lock.
         */
-
        spin_lock_irqsave(&idr_lock, *flags);
-       timr = (struct k_itimer *) idr_find(&posix_timers_id, (int) timer_id);
+       timr = idr_find(&posix_timers_id, (int)timer_id);
        if (timr) {
                spin_lock(&timr->it_lock);
-
-               if ((timr->it_id != timer_id) || !(timr->it_process) ||
-                               !same_thread_group(timr->it_process, current)) {
-                       spin_unlock(&timr->it_lock);
-                       spin_unlock_irqrestore(&idr_lock, *flags);
-                       timr = NULL;
-               } else
+               if (timr->it_process &&
+                   same_thread_group(timr->it_process, current)) {
                        spin_unlock(&idr_lock);
-       } else
-               spin_unlock_irqrestore(&idr_lock, *flags);
+                       return timr;
+               }
+               spin_unlock(&timr->it_lock);
+       }
+       spin_unlock_irqrestore(&idr_lock, *flags);
 
-       return timr;
+       return NULL;
 }
 
 /*
@@ -628,7 +645,7 @@ common_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting)
            (timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE))
                timr->it_overrun += (unsigned int) hrtimer_forward(timer, now, iv);
 
-       remaining = ktime_sub(timer->expires, now);
+       remaining = ktime_sub(hrtimer_get_expires(timer), now);
        /* Return 0 only, when the timer is expired and not pending */
        if (remaining.tv64 <= 0) {
                /*
@@ -722,7 +739,7 @@ common_timer_set(struct k_itimer *timr, int flags,
        hrtimer_init(&timr->it.real.timer, timr->it_clock, mode);
        timr->it.real.timer.function = posix_timer_fn;
 
-       timer->expires = timespec_to_ktime(new_setting->it_value);
+       hrtimer_set_expires(timer, timespec_to_ktime(new_setting->it_value));
 
        /* Convert interval */
        timr->it.real.interval = timespec_to_ktime(new_setting->it_interval);
@@ -731,14 +748,12 @@ common_timer_set(struct k_itimer *timr, int flags,
        if (((timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE)) {
                /* Setup correct expiry time for relative timers */
                if (mode == HRTIMER_MODE_REL) {
-                       timer->expires =
-                               ktime_add_safe(timer->expires,
-                                              timer->base->get_time());
+                       hrtimer_add_expires(timer, timer->base->get_time());
                }
                return 0;
        }
 
-       hrtimer_start(timer, timer->expires, mode);
+       hrtimer_start_expires(timer, mode);
        return 0;
 }